Saw gummer and swager.



W. H. MOZINGO.

SAW GUMMER AND SWAGER.

APPLIUATION FILED AUG. 7. 191s.

1,095,662, Patented May 5, 1914.

2 SHEETS-SHEET l.

IIIUHHIIIIIIII COLUMBIA PLANOGRAI'H Co.. WASIHNGTUN. D. :i

W. H. MOZINGO.

Y SAW GUMMERv AND SWAGER.

APPLICATION FILED AUG. 7, 191s. 1,095,662 Patented May 5, 1914. .2sHBBT/s` in srnns rar s,

WILLIAM I-I. MOZINGO, OF HUB-DLAND, MISSOURI, ASSIGNOB. OF ONE-HALF TOGEORGE IVI. HASHER, OF GIBBS, MISSOURI.

SAW' GUMMER AND SWAGER.

Specification of Letters Patent.

Patented May 5, 1914.

Application filed August 7, 1913. Serial No. 783,585.

To all whom t may concern:

Be it known that I, l/VILLIAM H. MoZrNGo, acitizen of the United States,residing at Hurdland, Missouri, have invented a certain new and usefulimprovement in Saw Gummers and Swagers, of which the following is afull, clear, and eXact description, such as will enable others skilledin the art to which it appertains to make and use the same1 referencebeing had to the accompanying drawings, forming part of thisspecification, in which Figure 1 is aside elevational view of a sawgummer and swager of my improved construction. Fig. 2 is a frontelevational view of the combined tool. Fig. 3 is a vertical sectionalview taken approximately on the line 3 3 of Fig. 1. Fig. i is anelevational view looking at the underside of a portion of the wheelwhich is mounted on one ,end of the main feed screw of the tool. Fig. 5is a vertical section taken approximately on the line 5 5 of Fig. 2, andshowing the position of a circular saw during the gumming operation.Fig. 6 is a detail section taken approximately on the line 6 6 ofFig. 1. Fig. 7 is a detail elevational View of a portion of the frame ofthe tool and showing the swaging roller in position on the main shaft ofthe tool. Fig. 8 is a hori Zontal sectional view taken approximately onthe line 8 8 of Fig. 1. Fig. 9 is an elevational view partly in section,said view being taken approximately on the line 9 9 of Fig. 6. Fig. 10is an elevational view of a part of the tool provided with an attachmentwhich adapts the tool for use upon a crosscut saw.

My invention relates to improvements inl saw gummers and swagers of thetype shown in Patent No. 1,040,385, issued to me October 8, 1912, andthe principal object of my present invention is to generally improveupon and simplify the construction of the combined gummer and swager inmy patent aforesaid.

Further objects of my invention are to provide a gumming and swagingtool with a simple yet positive feeding means which has two speeds andwhich can be easily and quickly operated and regulated; to providesimple means for imparting longitudinal reciprocating movementV to thegumming or swaging rollers simultaneously with their rotation, therebyevenly distributing the wear upon said gumming and swaging members; toprovide a readily adjustable wedge or member which forms a guide or gageagainst which one of the saw teeth bears, in order to properly adjustthe position of the tool upon a circular saw; to provide simple meanswhereby the gumming and swaging rollers or tools can be readilyinterchanged, and to provide means whereby the vertically moving framewhich ycarries the gumming and swaging roll carrying shaft is held in afirm and substantial manner during` its downward feeding movement uponthe main frame of the tool.

l/Vith the above and other objects in view, my invention consists incertain novel features of construction, and arrangement of partshereinafter more fully `described and claimed.

The main frame of my improved device is preferably formed in a singlepiece and comprises a pair of substantially U-shaped members 1 and thelegs 1iL on one side being substantially longer than the legs on theopposite side. The upper ends of the short pair of legs are united by across piece 3, and formed integral with the upper ends of t-helongerpair of legs and extending over the shorter legs are horizontallydisposed members 4, the ends of which are united by a cross bar 5.

Formed integral with the ends of the members 4 near the points wherethey join with the upper ends of the legs 1a is a transverse bar 6, oneof the vertical faces of which is threaded. Formed in the outer faces ofthe legs 1a are grooves 7 in which operate roller bearings hereinaftermore fully described.

Formed on the rear side of one of the legs 1a is a pair of rearwardlyprojecting bearings 8 in which are screw-seated thumb screws 9 andformed on the opposite one of the legs 1a are corresponding bearings 8aLin which are screw-seated set screws 10 'provided on their outer endswith hand wheels 11. The thumb screws 9 and set screws 10 provide meansfor clamping the frame 1 upon the saw when the device is in use.

Pivotally mounted upon a pin 12 which is seated in the short pair oflegs of the frame is a substantially wedge shape gage or guide block 13,the inclined faces of which are for the purpose of serving as bearingsfor the outer faces of the teeth when the device is applied to a saw forthe purpose of correct adjust-nient of said device, and the upper end ofthis block is provided with a slot or recess 14, said upper endoccupying a position between the upper ends of the short legs and behindthe transverse bar 3.

Journaled in the upper ends of the short legs of t-he main frame is atransverse shaft and mounted thereon and occupying the notch or slot 14is an eccentric disk 16, One end of the shaft 15 is provided with anoperating handle or plate 17, and by engaging said plate or handle androtating said is changed, thereby rocking the wedge bleek 13, andadjusting the inclination of the inner one of the inclined facesthereof.

Journaled in the horizontal arms 4 near i the cross bar 5 is a shaft 18provided on one end with an operating` handle 19 and carried by saidshaft between the arms 4 is an eccentric disk 20. This disk ispositioned in a corresponding aperture formed in the block 21 whichoccupies a position between the arms 4, and one of the vertical faces ofthis block is threaded and occupies a position directly opposite thethreaded face of the cross piece 6.

By rocking the shaft 18 and the eccentric disk carried thereby the block21 can be reciprocated and moved toward or away from the cross bar 6.The yoke which carries the shaft on which the gumming and swaging toolsare mounted comprises a pair of parallel legs 22 which occupy positionsto the sides of the space between the legs of the main frame 1 and saidlegs 22 are seated in and arranged to slide through bearings 23 whichare formed in the side faces of the arms 4.

Journaled on the lower portions and rear sides of the legs 22 arecombined guide and bearing rollers 24 which traverse the grooves 7 asthe yoke moves vertically relative to the main frame. Formed integralwith the lower portions of the legs 22 is a cross bar 25 and journaledthereon is the lower end of a screw shaft 26, which latter passes upwardbetween the threaded faces of the cross bar 6 and the block 21. Theupper end of this screw shaft is reduced in diameter and is ournaled ina bearing 27 which is formed integral with the upper ends of the legs22. Fixed on the end of this shaft above the bearing 27 is a hand wheel28 provided on its underside with two concentric rows of teeth 29 and29a.

The lower ends of the legs 22 are provided with bearings 30 and 30a, andloosely mounted in the bearing 30 is a sleeve 31. the same beingprovided with an annular groove 32 and receives the inner end of a setscrew 34 which la tei' is seated in the bearing 30. 4. portion of thesleeve 31 outside the bearing 30 is made eccentric as designated by 33and loosely mounted on this eccentric portion is the lower end of alever which extends upward alongside of one of the legs 22 of the yoke.The upper end of this lever terminates immediately beneath the handwheel 28 and adjustably positioned on said upper end is a plate 8ocarrying a single tooth Si' which is adapted to engage with either ofthe sets of teeth 29 and 29a.

Formed through the central portion of the lever is a slot 38 and passingtherethrough and seated in the corresponding leg I 22 is a fulcrum pin39. shaft the position of the eccentric disk 1G I The sleeve 31 has akey and slot connection with a shaft 40, one end of which is reduced indiameter as designated by 41 l and detachably iXed on said reduced endis a crank handle 42. By this construction the sleeve 31 rotates withthe shaft 40 and said last mentioned shaft is permitted. to slidethrough the sleeve. rEhe left hand portion of the shaft 40 is reduced indiameter as designated by and the outer end of this reduced portion isthreaded and adapted to receive a lock nut Mounted upon the reducedport-ion 40a of the shaft 40 and o ierating in the bearing 30a is asleeve 44. ldositioned between the end of this sleeve and the lock nut43 is a grooved collar 45.

A Lgumniing tool or cutter 46 adapted to be positioned on the reducedportion 40 of the shaft and this tool or cutter is clamped against ashoulder at the end of the shaft 40 by the sleeve 44 which latter ismoved as the nut 43 is tightened on the end of the reduced portion ofthe shaft. lllhen desired, the gumming roll or cutter 46 can be removedaiid a swaging roll 47, as shown in Fig. 7, substituted therefor. 1fdesired, the swaging roll can be provided with a lug 48 which engages inone end of the groove in the shaft 40, thereby preventing said ewa-gingroll from slipping during its action upon the teeth of the saw.

Loosely mounted on the lower end of the screw rod 2G and positionedimmediately above the cross piece 25 is a bar on which is fulcrumed allever 50 provided at one end with a slot 51 and at its opposite end witha bearing 52. Fulcrunied on the outer end of this cross bar 4S) is abell crank one of the arms of which engages in the bearing 52 and theopposite arm is bifurcated and receives one end of a lever 54. Thislever is locked to the bell crank by means of a set screw 55 and looselyconnected to the opposite end of this lever is a yoke 5G which engagesin the grooved collar 45, previously describer .lournaled on the end ofthe cross bar 49 opposite the end on which the bell crank 53 is mountedis a ratchet wheel 57. frein the face of which projects a pin 58, thesame `Dassing through the slot 51 in the lever 50.

ian

Carried by the lever 35 is a single tooth 35 which is adapted to engagethe teeth of the ratchet wheel 57 during the reciprocating movement ofsaid lever 35.

A tool of my improved construction, when in use, is applied to the edgeof a circular saw and is clamped thereon by manipulating the hand wheels11, thereby forcing the set screws against the saw and clamping the sameagainst the inner ends o-f the thumb screws 9. The block 21 is withdrawnfrom the screw shaft 26 by engaging the handle 19 and rocking the shaft18, and thus said shaft and the yoke carrying the gumming tool shaft canbe quickly elevated and adjusted in position relative to the space ornotch between the teeth of the saw. The block 21 is then forced intoengagement with the screw shaft 26.

The block 13 is adjusted by manipulating the shaft 15 so that one of theinclined faces of said block forms a bearing for the outer face of oneof the saw teeth, thus insuring the correct angle of the tool relativeto the teeth of the saw.

Assuming that the gumming roll or cutter 46 is positioned on the shaft40 and locked thereon by tightening the nut 43, the operator, in orderto gum the saw or deepen the notch between the teeth thereof, manuallyengages the crank handle and rotates the shaft 40. Following suchrotation the yoke and gumming roll are gradually lowered to permit saidgumming roll to engage the saw, which lowering action is brought aboutby the intermittent rotation of the shaft 26.

The sleeve 31 rotates with the shaft 40 and the eccentric 33 operatingin its bearing in the lower end of the lever 35 imparts reciprocatingmotion to said lever and as said lever is fulcrumed upon the pin 39 itv-ibrates simultaneously with its reciprocat ing movement. The tooth 37on the plate 36 carried by the upper end of lever 35 engages the teethof one of the annular racks on the underside of the hand wheel 28, andthus said hand wheel is rotated intermittently or step by stem. As aresult of such movement, the shaft 26 is likewise intermittently rotatedand as the threaded portion of said shaft engages the threaded faces ofthe cross piece 6 and block 21, said shaft will be gradually lowered ormoved downward relative to the frame of the device, and likewise theyoke and parts carried J[hereby will be moved gradually downward. Thismovement causes the gumming roll 46 to engage between two of the teethof the saw, and consequently the notch between the teeth will begradually deepened. During such operation the gumming roll will be'reciprocated lengthwise so as to evenly distribute the wear along theentire edges of all of the teeth of said gumming roll, saidreciprocating movement being brought about as follows:

As the lever 35 is reciprocated the tooth 35a thereon successivelyengages the teeth of the ratchet wheel 57, consequently impartingintermittent rotary movement to said ratchet wheel, and by reason of thepin and slot connection between said wheel and lever 50, the latter willbe moved upon its fulcrum thereby actuating the bell crank 53 andswinging the free end of the lever 54 backward and forward. This lever54 carries the yoke 56 which engages in the grooved collar 45 and assaid collar is mounted on the reduced portion 40:L of the shaft 40 thelatter and the parts carried thereby will be intermittently reciprocatedsimultaneously with their rotary movement. lVhen it is desired tosubstitute the swaging roll for the gumming roll the nut 55 is loosenedto permit the lever 54 to be swung outward and nut 43 is now removedfrom the end of the reduced portion of the shaft 40a to permit theremoval of the grooved collar 45, sleeve 44 and gumming roll 46.

In performing the swaging operation the eccentric disk 16 is shifted bya partial rotation of the shaft 15 so as to swing the lower portion lofthe block 13. The device is now adjusted on the point of one of the sawteeth so that said point is positioned between the swaging roll and theadjacent beveled face of t-he block 13. The shaft40 is now rotated bymanipulating the handle 42, and the surface of said swa-ging roll loeingupon the point of the tooth tends to flatten and spread the same,thereby eecting the swaging operation. During such operation, the block13 performs the function of an anvil or bearing against which the pointor end of the tooth engages when being swaged or flattened by the actionof the swaging roll. During the vert-ical movement of the yoke relativeto the frame of the machine the legs 22 bear in the notches 23 and therollers 24 bear in the grooves 7, thereby holding the yoke firmly andguiding it accurately during its downward movement upon the frame.

The plate 36 can be readily adjusted upon the upper end of the lever sothat the tooth 37 will engage with either set of teeth- 29 and 29a, andby such adjustment and by providing two sets or annular rows of teeth itis possible to vary the speed ofthe downward feed of the shaft 26 andthe yoke.

In Fig. 10 I have shown an adjustable clamping member adapted to supportthe device when the same is in use upon a cross cut saw. This supportcomprises an arm 60, the upper end of which is engaged be-y tween theupper thumb screw 39 and upper set screw 10, and the lower portion ofsaid arm carries an adjustable clamping member 61 which is adapted toengage the edge of a cross cut saw when the device is positioned foroperation thereon.

A combined gumming and swaging tool of my improved construction is verycompact, is composed of but few parts, and, therefore, is not liable toeasily get out of order, can be easily applied to a saw and adjusted toproper position thereupon, and possesses superior advantages in point ofsimplicity, durability and general efficiency.

It will be readily understood that minor changes in the size, form andconstruction of the various parts of my improved tool can be made andsubstituted for those herein shown and described, without departing,`from the spirit of my invention, the scope of which is set forth in theappended claims.

I claim:

l. In a device of the class described, a frame adapted to straddle thecutting edge of a. saw, a yoke slidably mounted in said frame, a shaftrotatably mounted in said yoke, a feed screw for imparting movement tothe yoke, a disk on the upper end of said feed screw, which disk isprovided with concentric annular rows of teeth, a tool removably carriedby the shaft, lever fulcrumed on the yoke and operably connected to theshaft, to receive a reciprocating movement therefrom, and an adjustablemember on the upper end of the shaft for engaging one of the annularrows of teeth for imparting movement to the feed screw.

2. In a device of the class described, a frame adapted to straddle thecutting edge of a saw, a yoke slidably mounted in said frame, a shaftrotatably mounted in the yoke, a tool carried by said shaft, a feedscrew for imparting movement to the yoke, and shaft carried thereby, alever fulcrumed on the yoke and actuated by the shaft for impartingintermittent rotary movement to the feed screw, and means mounted on theyoke and actuated by said lever for imparting reciprocating movement tothe shaft as the saw is rotated.

3. In a device of the class described, a frame adapted to straddle thecutting edge of a saw, a yoke slidably mounted in said frame, a shaftrotatably mounted in said yoke, a feed screw for causing the yoke andcarried parts to move downward on the frame, a tool removably positionedon the shaft, a wedge shape gage block pivotally mounted in the frame,and an eccentric engaging said wedge block for adjusting the positionthereof.

4t. n a device of the class described, a frame, a yoke slidably mountedon said frame, a shaft rotatably mounted in the yoke, a tool removablypositioned on the shaft, a feed screw connected to the yoke, a leveroperatively connected to the shaft for imparting intermittent movementto the feed screw, a bell crank pivoted on the yoke, an arm extendingfrom said bell crank to the shaft, a fulcrumed lever connected to thebell crank, a ratchet wheel on the yoke, and having a pin and slotconnection with the last mentioned lever, and means on the firstmentioned lever for engaging the ratchet wheel to intermittently rotatethe same and impart movement to the bell crank and the arm which engagesthe shaft.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses, this 4th day of August, 1913.

VILLIAM H. MOZINGO.

fitnesses RALPH R. CAMPBELL, E. N. SPENCER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

